- 1). Print out (or make for yourself) a blue and yellow color wheel and a rainbow color wheel.
- 2). Cut the wheels out.
- 3). Trace the circumference of the wheels on to the piece of cardboard, using the pencil.
- 4). Glue the paper wheels onto the cardboard circles. The cardboard will aid the illusions by giving the color wheels stability while they spin.
- 5). Pierce the wheels through the center with the pencils and move the wheels up to around the eraser area to see the illusion most clearly.
- 6). Hold one of the pencils between your palms and move your hands in opposing horizontal directions to make the pencils spin between your palms. The rainbow wheel will appear white while spinning and the blue and yellow wheel will appear to contain many other colors such as red and green as it spins.
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